Volatile Organic Compound Vocs
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Bioactive and volatile organic compounds in Southern Brazilian blackberry (Rubus Fruticosus) fruit cv. Tupy
Blackberry (Rubus fruticosus, cultivar Tupy), an expanding fruit crop in southern Brazil, is greatly appreciated for its flavor and bioactive potential with limited characterization of its metabolite content. The purpose of this study was to characterize the bioactive and volatile organic compound (VOC) content of mature blackberry fruit of cultivar Tupy. Ga
Food Sci. Technol. Publicado em: 2014-09
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2. Desenvolvimento de microcantilever funcionalizado com polímero condutor para a detecção de compostos orgânicos voláteis e umidade relativa
The great interest to develop microcantilevers sensors is due to several desirable properties, in particular the ability to adjust the size and structure, thus increasing the perspectives for the construction of new sensor systems. In this work, we developed functionalized microcantilever sensors with conducting polymers to detect relative humidity, volatile
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/05/2012
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3. Poluição do ar por compostos orgânicos voláteis (COV) em ambiente interno hospitalar / Air pollution by volatile organic compounds (VOCs) inside hospital
The quantification of 11 carbonyl compounds (formaldehyde, acetaldehyde, acrolein, acetone, propionaldehyde, crotonaldehyde, butiraldehyde, benzaldehyde, isovaleraldehyde, valeraldehyde and 2,5-dimethylbenzaldehyde) and the identification of another 43 volatile organic compounds (alkanes, alkenes, aromatic, halogenated and nitrogenated compounds) have been d
Publicado em: 2009
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4. Evaluation of new vehicles cabin indoor air quality / Avaliação da qualidade do ar de cabines de veículos automotores recém-manufaturados
New motor vehicles cabins may be critical when considering the internal air quality, because concentrations of volatile organic compounds are at levels higher than the outdoors. Certain substances present in the cabin air can be harmful to humans according to their toxicity, mainly in the big cities. Assessment of the cabin air becomes necessary. In this stu
Publicado em: 2008
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5. Nível de degradação termomecânica e coleta de compostos orgânicos voláteis durante a extrusão de polímeros / Degradation level of polymers and collection of volatile organic compounds during extrusion
In this work we studied the thermomechanical degradation and volatile organic compound (VOC) generated during extrusion of the HDPE, PP, and PS. The degradation processes occurred during extrusion were analyzed by a new methodology proposed in this work and called Degradation Level Distribution Function (DLDF). The results obtained were also correlated with
Publicado em: 2008
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6. Implementação de sensores ópticos integrados para aplicações em análises químicas e ambientais. / Implementation of integrated optical sensors for chemical analysis and environment aplications.
The aim of this work is the development of optical chemical sensors based on Mach-Zehnder Interferometer (MZI) for chemical and environmental analysis applications. Such devices were implemented with waveguides fabricated on a silicon substrate. The waveguides were obtained using silicon nitride (Si3N4) and silicon oxide (SiO2) films obtained by CVD (Chemica
Publicado em: 2007
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7. Estudo sobre emissão de compostos orgânicos voláteis COVS em tintas imobiliárias a base de solvente e água
The arquictetonic paints are one of the sources of volatile organic compound s emission (VOCs) which affect the air quality indoors. These compounds can cause harm to people s health such as respiratories diseases, neurotoxic and carcinogenic effects, among other things. Besides, they contribute to troposferic ozone s formation. This study mainly aims at ide
Publicado em: 2006
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8. Effect of air-oxygen and argon-oxygen mixtures on dielectric barrier discharge decomposition of toluene
One alternative application in the decomposition and destruction of volatile organic compounds (VOCs) by a silent plasma dielectric barrier discharge (DBD) has been successfully accomplished. For this purpose, we have designed and constructed two pairs of cells, of rectangular and circular geometries, 333.96 cm³ each cell, and a similar second pair of 62.25
Brazilian Journal of Physics. Publicado em: 2004-12
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9. Transient Release of Oxygenated Volatile Organic Compounds during Light-Dark Transitions in Grey Poplar Leaves1
In this study, we investigated the prompt release of acetaldehyde and other oxygenated volatile organic compounds (VOCs) from leaves of Grey poplar [Populus x canescens (Aiton) Smith] following light-dark transitions. Mass scans utilizing the extremely fast and sensitive proton transfer reaction-mass spectrometry technique revealed the following temporal pat
American Society of Plant Biologists.